CVE-2026-24310: SAP NetWeaver Auth Bypass Vulnerability

CVE-2026-24310 Overview

CVE-2026-24310 is a Missing Authorization vulnerability (CWE-862) in SAP NetWeaver Application Server for ABAP. Due to a missing authorization check, an authenticated attacker could execute a specific ABAP function module and read sensitive information from the database catalog of the ABAP system. This vulnerability has low impact on the application's confidentiality with no effect on integrity and availability.

Critical Impact
Authenticated attackers can bypass authorization controls to access sensitive database catalog information from SAP NetWeaver ABAP systems, potentially exposing internal database structure and metadata.

Affected Products

SAP NetWeaver Application Server for ABAP

Discovery Timeline

2026-03-10 - CVE-2026-24310 published to NVD
2026-03-11 - Last updated in NVD database

Technical Details for CVE-2026-24310

Vulnerability Analysis

This vulnerability stems from a Missing Authorization flaw (CWE-862) in SAP NetWeaver Application Server for ABAP. The affected component fails to properly verify that users are authorized before allowing execution of specific ABAP function modules that interact with the database catalog.

The exploitation requires network access and authenticated user credentials. While the attack complexity is considered high due to the specific conditions required for successful exploitation, the vulnerability allows information to be read across security boundaries (changed scope). The impact is limited to confidentiality with low severity—integrity and availability remain unaffected.

An attacker successfully exploiting this vulnerability would gain unauthorized access to database catalog information, which could reveal internal database structure, table names, and metadata. This information could potentially be leveraged for reconnaissance in more sophisticated attack chains.

Root Cause

The root cause is a missing authorization check in SAP NetWeaver Application Server for ABAP. The vulnerable ABAP function module does not properly validate whether the authenticated user has the necessary permissions before executing database catalog queries. This authorization bypass allows users with valid but limited credentials to access information beyond their intended access scope.

Attack Vector

The attack vector is network-based and requires the attacker to have authenticated access to the SAP NetWeaver ABAP system. The attacker would invoke the vulnerable ABAP function module, which due to the missing authorization check, returns sensitive database catalog information. The exploitation scenario involves:

An attacker gains valid credentials to the SAP NetWeaver ABAP system (even with minimal privileges)
The attacker identifies and calls the vulnerable ABAP function module
The function module executes without proper authorization validation
Database catalog information is returned to the attacker, bypassing intended access controls

The vulnerability manifests in the authorization handling within the ABAP function module. See the SAP Note #3694383 for detailed technical guidance on the affected components.

Detection Methods for CVE-2026-24310

Indicators of Compromise

Unusual or unauthorized access to ABAP function modules that query database catalog information
Unexpected database catalog queries from user accounts that do not typically require such access
Elevated audit log entries showing function module executions from accounts with limited business need

Detection Strategies

Implement SAP Security Audit Log (SAL) monitoring to track function module executions and identify anomalous patterns
Configure authorization trace logging to detect calls to the affected function modules from users without proper authorization objects
Deploy SIEM correlation rules to identify authenticated users accessing database catalog functions outside normal business operations

Monitoring Recommendations

Enable enhanced logging for ABAP function module calls, particularly those interacting with database catalog objects
Review SAP transaction SM21 and ST22 regularly for unusual function module activity
Monitor user authorization changes and access patterns to detect potential exploitation attempts
Integrate SAP audit logs with enterprise SIEM solutions for centralized threat detection

How to Mitigate CVE-2026-24310

Immediate Actions Required

Apply the security patch referenced in SAP Note #3694383 immediately
Review and audit user authorizations to identify accounts with access to the affected ABAP function modules
Implement additional authorization checks at the application layer until patching is complete
Monitor for suspicious function module executions in SAP Security Audit Logs

Patch Information

SAP has released a security patch addressing this vulnerability. Administrators should apply the fix documented in SAP Note #3694383. For comprehensive security updates, refer to the SAP Security Patch Day portal.

Organizations should follow their standard change management processes while prioritizing this patch based on the low severity rating and the requirement for authenticated access. However, environments with sensitive database information or regulatory compliance requirements should consider expedited patching.

Workarounds

Restrict access to the affected ABAP function modules by implementing additional authorization objects in SAP role management
Limit network access to SAP NetWeaver ABAP systems to trusted IP ranges and authorized users only
Implement additional application-level authorization validation as a compensating control
Review and minimize the number of users with access to database catalog-related function modules

bash

# SAP transaction commands for monitoring and mitigation
# Review authorization traces
# Transaction: ST01 - System Trace
# Transaction: STAUTHTRACE - Authorization Trace

# Check security audit logs
# Transaction: SM21 - System Log
# Transaction: SM20 - Security Audit Log

# Review user authorizations
# Transaction: SU53 - Authorization Check Analysis
# Transaction: SUIM - User Information System